Israel is released from captivity and are free to return to Jerusalem and rebuild the temple. But instead of building the temple, they are distracted by the past. The new temple is nothing in comparison to Solomons Temple. They are discouraged and have stopped the work. Haggai says, Do't focus on what was, but what is to come. For God has given them, and us, the purpose to be a part of the greatest building project ever... His House.